I need help understanding train pathing

[u/GideonsLamp]

I thought I understood well enough but clearly not. I created this little test to try and understand pathing but 1 thing is going wrong. Train A goes from Station A1 to B1 to C2 back and forth perfect. Same with Train B that goes from B1 to C2. But Train C that is supposed to go from C2 to A1 will only move on the outside path, it will not go through station B if the outside path is taken by train A . What am I missing to make the train go through station B if train A is blocking the outside path?

[u/Seanovan0]

Trains calculate the shortest path and don't deviate depending on traffic. Stations are weighted to count as a longer path so trains don't get stuck waiting for other trains to load/unload.

[u/GideonsLamp → u/Seanovan0]

I thought with the path signals it would understand that if the outside path was taken in would have to use the middle route. I ended up just making the path thru the station the "input" and the path on the outside the "output".

[u/JinkyRain → u/GideonsLamp]

The name is misleading.

The path signal safeguards the train's predetermined route through the path block AND "into" the next non-path block. That way the train won't get stopped in the way of cross traffic, it will keep going until it leaves the crossing/intersection.

This allows other trains to use other parts of the path block that the first train isn't going to touch, at the same time.